Castle of Eslida

The Castle of Eslida stands on a hill south of the town of Eslida, in the La Plana Baixa district of Castellón province, in Spain's Valencian Community. Built by Arab settlers, it once served as an administrative and religious hub for the surrounding area before passing into Christian hands and gradually falling into disrepair.

Where is the castle located and what surrounds it?

The ruins crown a hillside overlooking the town of Eslida, amid the rugged terrain typical of inland Castellón. Nearby, a cave known as Cova de l'Oret has yielded traces of settlement dating back to the early Bronze Age, showing that people lived in the area long before the fortress itself was built. Some historians have tentatively linked the site to Oleastrum, a place named by the Roman geographer Strabo, though this identification remains unconfirmed.

When was the castle built, and what role did it play under Islamic rule?

The town and the castle took their present form during the medieval period, between the 12th and 13th centuries, under Almohad rule. At the time, Eslida served as the seat of an alcadiazgo, a district governed by a qadi, the Islamic judge and administrator. A school of alfaquíes, or Islamic legal scholars, also operated here, and the settlement gained a reputation as a local center of Islamic learning.

How did the Christian conquest change the town?

King James I of Aragon captured Eslida between Lent of 1238 and the fall of Valencia on 9 October that same year. In 1242 he granted the town a carta de población, a settlement charter setting out the terms under which the population would live under the new rulers. In 1258 the lordship passed to Galcerán de Moncada, and later the castle came under the barony of Xèrica and, subsequently, the Duchy of Segorbe.

Despite the change of rulers, Eslida retained a large Muslim population for generations. As a result, the area was strongly affected by the Morisco revolts of later centuries and, ultimately, by the 1609 expulsion of the Moriscos, which emptied much of the region and left the castle to decline into ruin.

What does the castle look like today?

The fortress is a mountain-type stronghold of Arab origin, built on an irregular, dispersed polygonal plan shaped by the rocky terrain it occupies. It is enclosed by two defensive wall circuits reinforced by several towers. Its most distinctive feature is the Torre Mayor, a main tower with a triangular floor plan and a prismatic body, flanked by two twin corner turrets that acted as additional defensive strongpoints. This layout is considered unusual within Valencian castle architecture.

Frequently Asked Questions

Can visitors explore the Castle of Eslida? The ruins are accessible as a listed cultural heritage site, though centuries of abandonment have left much of the structure in a ruined state.

Who built the Castle of Eslida? The fortress dates to the Almohad period, in the 12th and 13th centuries, in an area that had already been inhabited much earlier, during the Bronze Age and possibly Roman times.

When did the castle come under Christian rule? James I of Aragon conquered Eslida in 1238, shortly before taking Valencia itself, and granted the town a settlement charter in 1242.

Why did the castle fall into ruin? The turning point was the 1609 expulsion of the Moriscos, which drained the region of much of its population and left the fortress to gradually decay.